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smallmouth yellowfish
Smallmouth Yellowfish (''Labeobarbus aeneus'') is a species of ray-finned fish in the genus ''Labeobarbus''. It has become an invasive species in rivers of the Eastern Cape, South Africa, such as the Mbhashe River.〔(Mbhashe River System )〕
==Introduction==
The Orange-Vaal River system is one of the few in South Africa that is truly international. The source of the Orange river is in Lesotho and that of the Vaal on the Mpumalanga highveld whereas their tributaries extend well into most provinces of South Africa as well as into Botswana and Namibia. The Orange river eventually flows into the Atlantic Ocean at Oranjemund on the West coast border between South Africa and Namibia. The river drains hugely diverse terrestrial habitat types ranging from grasslands, mountains and karoo to dessert. This results in diverse riverine habitats that include clear mountain streams, turbid waters of the middle Orange river and the nutrient-rich discoloured water of the lower reaches of both rivers. Several in stream dams have changed the natural flow of the upper reaches to a regulated flow in the middle and lower reaches. This river system is home to South Africa's best known and favourite sport yellowfish, the Orange-Vaal Smallmouth Yellowfish, ''L. aeneus''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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